Alternative Energy HQ solar power for homes, wind energy, and bio fuel issues
Marianne Lavelle
For National Geographic News
Published June 22, 2011
This story is part of a special series that explores energy issues. For more, visit The Great Energy Challenge.
One of Indonesia’s most ardent rain forest protection activists is in what may seem an unlikely position: Spearheading a project to produce biofuel from trees.
But tropical forest scientist Willie Smits, after 30 years studying fragile ecosystems in these Southeast Asian islands, wants to draw world attention to a powerhouse of a tree—the Arenga sugar palm. Smits says it can be tapped for energy and safeguard the environment while enhancing local food security.
Smits says that the deep-rooted feather palm Arenga pinnata could serve as the core of a waste-free system that produces a premium organic sugar as well as the fuel alcohol, ethanol, providing food products and jobs to villagers while it helps preserve the existing native rain forest. And scientists who have studied the unique harvesting and production process developed by Smits and his company, Tapergie, agree the system would protect the atmosphere rather than add to the Earth’s growing carbon dioxide burden.
“The palm juice chiefly consists of water and sugar—made from rain, sunshine, carbon dioxide and nothing else,” says Smits. “You are basically only harvesting sunshine.”
The project, being funded in part by a 73,160 euro grant (U.S. $105,000) from National Geographic’s Great Energy Challenge initiative, has potential to disrupt a cycle of poverty and environmental devastation that has gripped one of the most vulnerable and remote areas of the planet, while providing a new source of sustainable fuel.
The Fuel Threat to Forests
Tapergie’s sugar palm production facility that opened last year in Tomohon (map), in the North Sulawesi province of Indonesia, and the microscale facilities called Village Hubs that Smits aims to launch on nearby islands, are a far cry from the oil palm biofuel operations that have devastated the rain forest.
Demand for oil made from the pulp and seeds of oil palm trees in Southeast Asia soared when European countries sought to displace petroleum fuels with biofuel in the past decade. It was a move that governments hoped would reduce carbon emissions, but the impact was the reverse. Tracts of rain forest were cleared, and peat land was drained and burned on a massive scale to make way for oil palm monoculture. Because of the carbon emissions caused by rainforest destruction, Indonesia leapt to the top tier of world greenhouse gas emitters, just behind giant energy consumers China and the United States.
Smits, who had been knighted in his native Netherlands, was among the forest advocates who sounded the warning around the world about the impact of large-scale biofuel production from oil palm in his adopted home of Indonesia.
Smits already had gained recognition as one of the world’s most prominent protectors of Asia’s great apes and their habitat, as founder of the Borneo Orangutan Survival Foundation. He laid out the biofuel problem, and the rain forest restoration efforts he had spearheaded, in talks around the world, including in the popular online series sponsored by the nonprofit TED.
But Smits felt he could take those restoration efforts much further, and the secret was a tree with a value that was first impressed upon him 31 years ago, when he was courting a native Indonesian woman of a mountain tribe of Sulawesi who would become his wife. (She was later elected a female tribal leader for her good deeds.)
By custom, before the marriage, he was required to pay his dowry in the form of six sugar palms. It seemed a meager offering, until Smits realized each tree’s potential yield.
The fruit can be harvested and sold as a delicacy. A starch, sago, can be extracted from the stems. The wood is stronger than oak. Most important of all, the tree has a distinctive sap, which can be tapped the way a sugar maple is tapped for maple syrup, but year-round and in vast quantities. The high-carbohydrate juice can be used to make a palm sugar that is a healthier substitute for white cane sugar. Smits estimated that there are at least 60 different products that can come from the Arenga sugar palm, making it a wholly appropriate marriage gift.
“This was enough to support a young family,” he said. “That got me interested in studying the sugar palm in more detail.”
“The Most Amazing Tree”
He found that the Arenga sugar palm had numerous qualities that made it a virtual sentry of the forest. Its deep roots mean it can be grown on steep, almost vertical, slopes—offering protection against erosion. It needs little water and is drought- and fire-resistant, important on volcanic islands. It is resistant to pests and needs no fertilizer; its presence in a forest actually enhances the soil.
Because of these qualities, Smits found that the Arenga sugar palm could be a key species in his efforts to restore Indonesian rain forests that had been brutally logged and burned for decades.
“It’s the anti-particle of oil palm . . . the most amazing tree I’ve ever run into,” says energy expert Amory Lovins, chairman and chief scientist of Rocky Mountain Institute in Snowmass, Colorado, and member of National Geographic’s Great Energy Challenge advisory board. Lovins recommended Smits’ project as the first grantee in the society’s three-year energy initiative when he learned of his idea for furthering his rainforest restoration and protection efforts by tapping the sugar palm for fuel.
Smits knew the sugary juice tapped from sugar palms typically was fermented to produce a traditional alcoholic beverage. That meant it also could be used to produce the alcohol fuel, ethanol.
